H- / 



HABITAT 

 (Biotope) 



A specific type of place that is occupied by 

 an organism , a population , or a community . 



HABITAT FORM 



( Ecotype ) 



HABITAT NICHE 



The specific part or smallest unit of a habitat 

 occupied by an organism. (See Ecological Niche ) 



HADAL ZONE 



Pertaining to that part of the ocean at depths 

 exceeding 6000 meters, including both water 

 and floor or bottom. (See Abyssal Zone) 



HERBICIDE 



A chemical substance used for killing plants, 

 especially weeds. 



HERBIVORE 



An organism that feeds on plant material, 

 (See Carnivore) 



HETEROGENEOUS 



Consisting of dissimilar elements or constituents, 

 (See Homogeneous ) 



HETEROTROPHIC 

 (Holozoic) 



Pertaining to organisms that are dependent 



on organic material for food. (See Autotrophic ) 



HIGHER AQUATIC 

 PLANTS 

 (Pond Weeds, 

 Aquatic Vascular 

 Plants) 



Those plants composed of complex and differentiated 

 tissues whose seeds germinate in the water phase or 

 substrate of a body of water and which must spend 

 part of their life cycle in water. This grouping 

 includes plants which grow completely submersed 

 as well as a variety of emersed and floating leaf 

 types. (See Macrophyte ) 



